Gas-scrubber apparatus.



A. M. GOW.

GAS SCRUBBER APPARATUS.

APPLICATION FILED AUG. 29, 1903.

9%5,936 Patented Jan. 11, 1910.

1;; a j 2 SHEETS-SHEET 1.

A. M. GOW.

GAS SCRUBBER APPARATUS.

APPLICATION FILED AUG. 29, 1903.

945,936, Patented Jan. 11,1910.

2 SHEETSSHEET 2.

' UNITED STATES PATENT OFFICE.

ALEXANDER M. GOW, OF'EDGEWOOD PARK, PENNSYLVANIA, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE WESTINGHOUSE MACHINE COMPANY, A CORPORATION OF PENNSYLVANIA.

To all whom it may concern:

Be it known that I, ALEXANDER M. Grow, a citizen of the United States, and resident of Edgewood Park, county of Allegheny, State of Pennsylvania, have invented certain new and useful Improvements in Gas- Scrubber Apparatus, of which the following is a specification.

My invention consists of a device for removing impurities from gas, such as fine particles of coal, dust and heavy hydro-carbon vapors condensed in. the form of tar. The apparatus is also adapted to the removal of ammonia by causing the ammonia to be absorbed by water and is so arranged that the water can be'used again and again until it reaches any desired ammoniacal strength. Furthermore the apparatus may be so designed as to draw the gas away from the source of supply and force it ahead along a pipe to any desired point. Consequently the apparatus may serve the functions of both exhau'ster and scrubber. These purposes are accomplished by subjecting the gas'to the action of a series of diskfans, each fan having a plurality of vanes, in such manner that the centrifugal force imparted by the rapidly revolving fans, throws the impurities, such as the heavy particles and the globules of tar, beyond the periphery of each fan, and into receptacles provided for their retention. Furthermore provision is made whereby water may be admitted to the surface of each disk fan, near its center, and by the centrifugal action be thrown at right angles to the place of rotation across the vanes of the fans, serving to keep them constantly wet and at the same time Washfrom them any particles that may adhere to them. In addition the water after it has been used on one fan may be discharged onto the next and so on, until it leaves the apparatus and is caught in a suitable receptacle. In this receptacle the tar and heavy particles may be removed from the Water and the water used over again. The repeated violent agitation of the water and thegas, together, serves to permit the ammonia to enter into solution in the water; and by using the Water again and again it becomes possible to concentrate the ammonia into a comparatively small volume of water. The centrifugal action is such that the gas leaves the apparatus at the opposite end, from which Specification of Letters Patent.

have the .pipin GAS-SCRUBBER APPARATUS.

it entered practically free from tar and other impurities. It has been found that a convenient Way of manufacturing the fans is to stamp them out of a circular sheet of steel and then bend the vanes to the desired angle. At the same time I do not limit my- I self to this method of construction for the fans may be made in any convenient manner and the vanes may be rough, corrugated or perforated, as may be desired.

The invention is illustrated in the accompanying drawings, in which Figure 1 is a vertical section of the apparatus; Fig. 2 is a plan view with the top piece of the casing removed; and Fig. 3 is vtention of particles thrown out by the fans.

These receptacles form part of the casing 11. From the receptacles 12, 13, 14, 15 and 16 extend stationary blades, 17, 18, 19, 20 and 21 respectively. From each receptacle there extends a plurality of these stationary blades as clearly shown in Fig. 2. The space between these blades is open at the bottom ex- 'cept that between two of them is a flooring 22 that serves to connect the receptacle 12 with the central opening23. Between the members of one pair of stationary blades errtending from each receptacle there is a similar flooring While the spaces between the other blades remain open. These fioorings are shown at 22, 23, 24, 25 and 26. An inlet 27 and an outlet 28 for gas are provided.

' 29 is a water supply pipe by means of which water may be supplied-through pipes 30, 31, 32, 33, 34 to the receptacles 12, 13, 14, 15 and 16, and the amount supplied to each receptacle may be controlled by valves 35,36, 37, 38 and 39. In practice it is not necessary to supply more than one receptacle with water but it is found convenient to arranged as shown. A

drain. pipe 40 rom the apparatus is provided discharging into tank 41.

or instance Patented Jan.- 11, 1910.

Application filed August 29, 1903. Serial No. 171,170.

43 is a pump taking its supply means of pi e 42 from tank 41 and delivering it to .supp y pipe 29 and thence into the apparatus. Y

The operation is as follows: Shaft 1 and- I pump 43 are started. The action of the fans draws gas in at inlet 27 and discharges it at outlet 28. At the same time water 1s admitted through valve and flows across partition 22 and falls onto the fan below. The centrifugal action of fan 6 throws the water violently outward into the receptacle 13. It flows across partition 23 and falls onto that fan 7 below. Again it is thrown outward and falls into the receptacle 14 and flows across the partition 24 onto the fan 8 immediately below, and so on until it is discharged from pipe 40 into tank 41. It will be seen, then, that thecurrent of gas, moved by the fans is subjected to a, series of violent centrifugal agitations and that at the same time water washes across the faces of the fans. Once the particles of impurities in the gas become thoroughly wet and taken up by the volume of waterthey cannot be again taken up by the as. This applies as welTto the globules o tar as to the I heavy particles of fine coal and dust. The

centrifugal action is also sufficient to throw out globules of water so that the gas on leaving the apparatus is practically free from moisture except the moisture of saturation at the temperature of the gas.

It will be understood that the purpose of the'stationary blades, interposed between the revolving blades is to bring the direction of motion.of the gas into a line'at right angles to the plane of rotation. For if this werenot done the gas, after passing the first fan would be whirled around in the casing and the blades .of the succeeding fans would have--no oppbrtunity to impinge on the particles of impurity which itis desired to remove. If the gas upon entering the scrubber is already driven at the desired velocity, or if it is sucked into' the scrub erby means of a fan located at any convenient point'on the discharge pipe, it is not necessary that I the vanes on. the successive fans have any pitch. Inother words if a stream of gasis maintained through the scrubber byother means than that of the fans in thescrubher, then the vanes may be set at right an- ,gles to the plane of revolution and in line with the line of flow. The action remains the same, for the gas stream is successively subjected to a violent centrifugal action and the impurities thrown out.

I claim as my invention:

1. In a gas-purifying apparat s, acasing, a rotatable shaft mounted therein, gas impelling and scrubbin blades mounted on said shaft" within sa1d casing stationar scrubber vanes isposed in said casing a jacent to said blades adapted to check the the walls of each chamber, means for intro duclng water lnto each chamber and means ,rality of individuall means for impelling the gas passing therethrou h.

4. n a gas purifying apparatus, comprising a plurality of superimposed, individually formed chambers, a vertically disposed r'otatable shaft, gas propelling blades carried by said shaft and operating in each of said chambers, stationary scrubber blades and recrement receptacles formed integrally with Q for discharging the water from one chamber onto the propeller blades of the chamber next pelow'." fy

5. n a as uri in apparatus comprising a plura lity bf indiv dually formed chambers, a plurality of rotatable gas propelling blades carried by said shaft and operating in each of said chambers, a plurality of radially disposed scrubber blades and.an annular recrement receptacle surrounding said blades formed integrally within the wallsof each chamber, means for-supplying water to each receptacle and means for discharging water from one rece blades of the next a' j acent chamber.

6. In a ing a plura hers, a plurality of rotatable gas propelling blades carried by said, shaft and operating in each of said chambers, and a plurality of radially disposed scrubber blades formed inte ally within the walls of each chamber.

In a gas purifying apparatus, a casing, a rotatable shaft mounted therein, a plurality of sets of gas impelling and scrubbing blades mounted on said shaft, stationary scrubber vanes disposed in said casing and adapted to check the rotary velocity of the gas delivered from one of said sets of blades and means for conducting water into said casing and delivering it adjacent to said shaft.

8, In a gas purifying apparatus, a casing comprising a plurality of like and connectmg chambers, each of which is provided with I a gas inlet port, a gas outlet port and a recrement collecting rece tacle, means for wetthe gas passing through said chambers rotatable means located within each gas purifying apparatus comprisity of individually formed chamtacle onto the propeller chamber for impelling the gas through said apparatus and for scrubbing it in its passage through said chamber.

9. A gas purifier embodying a plurality of connecting chambers through which the gas successively passes, each chamber being provided with a gasinlet port, a gas outlet port, a plurality .of stationary scrubbing vanes, means for wetting and means for scrubbing the gas passing therethrough.

10. A gas purifying apparatus comprising aplurality of like and connecting chambers, each of which is provided with a gas inlet port, a gas outlet port, a recrement collecting receptacle and a plurality of impeller blades for scrubbing the gas in said chamber and delivering it through said apparatus.

11. A gas purifying apparatus comprising 1' scrubbing the gas'a-nd delivering it through said apparatus and stationary scrubbing vanes for checking the rotary velocity of the gas received from said impeller blades.

Signed at New York, in the county of New York and State of New York, this 25th day of August, A. D. 1903.

ALEXANDER M. GOV.

Witnesses:

WM. H. CAPEL, GEORGE H. S'rooKBRIDGE.

means for wetting the gas passing 

